Giz Wiz Biz is short for Giz(mo) Wiz(ard) Biz(ness). Dick DeBartolo and Leo Laporte do an associated podcast, and the topic this week is the Sony Reader.
Check out the podcast page
here or the podcast itself
here. It's the "Turn the Table Tuesday, April 17th, Netcast 292 episode".
Thanks to Caro for the tip!